Question: who subject of international law for office held by head of the organisation of United Nations Secretary-General?
Paraphrase: who subject of universal law for office held by head of the association of Joined together Countries Secretary-General?
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P2388 wd:Q81066 . ?sbj wdt:P31 wd:Q1896989 }